Problems

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Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 3743 589 16% 0.01 748 400 53% 7.1
10 Kinds of People 6262 1365 22% 0.01 1084 746 69% 4.9
2048 4308 2094 49% 0.00 1992 1696 85% 2.5
3D Printed Statues 2868 1421 50% 0.00 1328 1192 90% 2.0
3D Printer 298 50 17% 0.00 91 43 47% 8.3
3-Sided Dice 1271 89 7% 0.00 203 71 35% 8.7
4 thought 3975 1355 34% 0.00 1349 1122 83% 2.8
A1 Paper 2857 850 30% 0.00 827 644 78% 3.6
Aaah! 13666 6660 49% 0.00 5799 5395 93% 1.6
Abandoned Animal 622 107 17% 0.03 131 92 70% 5.6
ABC 4395 2074 47% 0.00 1993 1801 90% 1.7
Above Average 1541 663 43% 0.00 698 628 90% 1.9
A+B Problem 3496 347 10% 0.04 522 182 35% 8.3
A Brief Gerrymander 92 19 21% 0.15 20 11 55% 7.3
Abstract Art 152 34 22% 0.00 30 23 77% 5.5
Absurdistan Roads II 454 162 36% 0.00 153 103 67% 6.8
Absurdistan Roads III 1040 272 26% 0.02 259 188 73% 6.0
A Classy Problem 4397 1162 26% 0.01 1007 784 78% 4.2
ACM Contest Scoring 3904 2417 62% 0.00 2101 1987 95% 1.5
Adding Words 4792 1068 22% 0.00 1138 857 75% 3.8
A Different List Game 4602 319 7% 0.00 552 105 19% 9.1
A Different Problem 16021 6348 40% 0.00 5884 5104 87% 2.2
Adjoin the Networks 1165 318 27% 0.00 272 207 76% 6.1
Administrative Difficulties 488 113 23% 0.03 137 89 65% 6.4
Advanced Causal Measurements 22 5 23% 0.10 6 5 83% 5.6
Adventures in Moving -- Part IV 543 173 32% 0.00 161 137 85% 4.7
A Favourable Ending 859 180 21% 0.00 204 138 68% 5.1
A Feast For Cats 951 344 36% 0.28 233 187 80% 5.1
Air Conditioned Minions 2320 636 27% 0.00 694 511 74% 4.5
Airline Hub 1286 220 17% 0.01 247 135 55% 6.9
Airport Coffee 579 122 21% 0.09 110 87 79% 6.4
Airport Construction 2460 330 13% 0.02 247 131 53% 7.1
Airport Logistics 43 9 21% 0.00 15 9 60% 7.9
Airports 174 62 36% 0.13 59 42 71% 6.1
Akcija 3086 1371 44% 0.01 1222 1067 87% 2.2
Aladin 664 55 8% 0.10 99 17 17% 8.8
Alchemy 46 9 20% 0.03 20 9 45% 8.4
Alea iacta est 23 10 43% 0.34 12 10 83% 6.0
Alice in the Digital World 881 229 26% 0.01 241 185 77% 3.9
Alien Numbers 1312 662 50% 0.00 645 585 91% 2.0
A List Game 4723 1387 29% 0.00 1326 1103 83% 3.0
All about that base 1886 722 38% 0.00 768 641 83% 2.8
All Different Directions 612 269 44% 0.00 254 220 87% 2.7
Allergy Test 239 79 33% 0.00 66 35 53% 7.3
All Friends 583 102 17% 0.00 97 48 49% 9.2
All Just A Dream 1069 238 22% 0.05 174 124 71% 6.0
All Pairs Shortest Path 5095 852 17% 0.02 580 402 69% 5.0
Almost Perfect 3437 798 23% 0.00 855 665 78% 3.4
Almost Union-Find 3822 611 16% 0.02 606 315 52% 7.0
Alphabet 157 80 51% 0.00 89 73 82% 4.8
Alphabet Spam 3804 2478 65% 0.00 1819 1745 96% 1.4
Alternative Bracket Notation 186 76 41% 0.00 80 66 82% 5.8
Amalgamated Artichokes 2843 1294 46% 0.01 1146 998 87% 2.4
Amanda Lounges 1029 271 26% 0.04 245 189 77% 5.8
A Mazing! 1092 274 25% 0.09 123 88 72% 6.0
Amazing Race 235 59 25% 0.39 66 46 70% 7.3
Ambiguous Result 128 39 30% 0.03 54 37 69% 6.7
Amsterdam Distance 692 248 36% 0.00 289 221 76% 2.9
A Multiplication Game 175 42 24% 0.00 59 40 68% 5.7
Anagram Counting 1860 723 39% 0.00 687 568 83% 2.9
Andrew the Ant 97 35 36% 0.07 44 31 70% 5.3
A New Alphabet 6692 3044 45% 0.00 2865 2663 93% 1.6
Animal Classification 1132 221 20% 0.03 215 133 62% 7.1
An Industrial Spy 1122 577 51% 0.02 438 373 85% 3.2
Another Brick in the Wall 1293 691 53% 0.00 686 624 91% 1.9
Another Candies 4682 1243 27% 0.00 1324 1078 81% 2.9
Another Dice Game 78 57 73% 0.00 49 46 94% 3.6
Another Query on Array Problem 870 107 12% 0.05 179 77 43% 7.6
Anthony and Cora 532 136 26% 0.00 167 108 65% 6.3
Anthony and Diablo 1137 392 34% 0.00 440 375 85% 2.5
Antiarithmetic? 694 100 14% 0.01 191 83 43% 8.2
Ants 1600 746 47% 0.00 549 482 88% 2.4
Apaxiaaaaaaaaaaaans! 5867 3694 63% 0.00 3351 3210 96% 1.3
Apparatus 530 132 25% 0.01 110 83 75% 5.4
Apple Market 414 80 19% 0.07 88 47 53% 8.4
Apples, Cherries, and Mangos 276 88 32% 0.02 80 63 79% 6.0
Aquarium Tank 251 81 32% 0.00 75 59 79% 4.0
Aqueduct Construction 111 36 32% 0.01 32 26 81% 7.0
A Question of Ingestion 454 101 22% 0.00 90 69 77% 6.1
Arable Area 204 44 22% 0.04 49 29 59% 7.9
A Rational Sequence 992 317 32% 0.00 358 248 69% 5.3
A Rational Sequence 2 979 719 73% 0.00 673 642 95% 1.5
A Rational Sequence (Take 3) 419 356 85% 0.00 249 242 97% 1.7
Arbitrage? 1545 292 19% 0.04 213 172 81% 3.2
Arcade! 1005 187 19% 0.01 170 125 74% 6.0
Arctic Network 1001 356 36% 0.00 296 234 79% 4.6
A Real Challenge 3817 1837 48% 0.00 1811 1681 93% 1.8
Area of Effect 79 9 11% 3.16 14 7 50% 8.0
Arithmetic 1171 352 30% 0.00 339 263 78% 3.6
Army Strength (Easy) 1993 1045 52% 0.00 926 833 90% 2.1
Army Strength (Hard) 2677 1383 52% 0.01 929 819 88% 2.4
Around and Around We Go 26 11 42% 0.00 15 10 67% 7.7
Around the track 9 2 22% 0.01 3 2 67% 6.4
Around the Track 243 30 12% 0.00 47 20 43% 8.9
Arranging Hat 185 78 42% 0.05 72 63 88% 4.6
Arranging Wine 70 17 24% 0.03 26 16 62% 8.4
Arriving on Time 133 45 34% 0.04 42 35 83% 4.8
Artur 255 57 22% 0.06 63 40 63% 6.7
Artwork 663 240 36% 0.06 212 139 66% 5.9
A Safe Bet 208 67 32% 0.15 64 47 73% 5.9